There are plenty of sources of high-protein that humans have actually been eating during our evolutionary past. Like nuts, seeds, insects, animal flesh, and normal fruits and vegetables believe it or not.
The human body doesn’t need that much protein, really. In fact, too much of it causes problems that most people don’t seem to be aware of like calcium deprivation. We have the technology to make sure everyone gets quality food, we just don’t have the system set up to do it. Too much power relies on our ridiculous power-farming.
So, only the wealthy buy natural foods, and only the hippies grow them. Everyone else gets mostly just the easily processed and preserved (slightly toxic) grains and legumes, and the addictive animal products and drugs when they’re eating really fancy. Because that’s what keeps the money (control) flowing, not just in agriculture, but in all the industries that depend upon the status quo. For example, the medical industry when most people get sick on a regular basis, and the healthfood industry when people desperately seek an alternative.
We’re not supposed to factor in the toxicity of our food as an acceptable variable in diet choices. We’re supposed to demand the healthiest food possible, for everyone, without question. To demand that people work harder for better food is like demanding an engine to run faster for better fuel. Nutrition is the basis of health and health is the basis of life. You can judge a society by their agriculture. And we suck.